Bern
Switzerland
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Bern, Switzerland

Bern, Switzerland, in a striking aerial panorama of the leafy landscape, beautiful blue waters, and the city buildings
Bern, Switzerland, in a striking aerial panorama of the leafy landscape, beautiful blue waters, and the city buildings
December, the first month of the winter, in Bern, is still a cold month, with average temperature varying between -2.3°C (27.9°F) and 3.5°C (38.3°F).

Temperature

In December, the average high-temperature slightly decreases, from a frosty 7.3°C (45.1°F) in November, to a cold 3.5°C (38.3°F). In Bern, Switzerland, in December, the average low-temperature is -2.3°C (27.9°F).

Humidity

November and December, with an average relative humidity of 85%, are most humid months.

Rainfall

In Bern, in December, it is raining for 9.9 days, with typically 74mm (2.9") of accumulated precipitation. In Bern, Switzerland, during the entire year, the rain falls for 124.2 days and collects up to 1059mm (41.7") of precipitation.

Snowfall

January through April, October through December are months with snowfall. December is the month with the most snowfall in Bern. Snow falls for 3.1 days and accumulates 133mm (5.2") of snow.

Daylight

The month with the shortest days is December, with an average of 8.6h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 1.6h of sunshine.

UV index

Months with the lowest UV index in Bern are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 1 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Bern?

In Bern, in December, the average high-temperature is 3.5°C (38.3°F), and the average low-temperature is -2.3°C (27.9°F).

What are the most humid months in Bern?

Months with the highest humidity in Bern are November and December, with an average relative humidity of 85%.

What is the average humidity in December in Bern?

In Bern, Switzerland, the average relative humidity in December is 85%.

How many days does it rain in December in Bern?

In Bern, Switzerland, during December, the rain falls for 9.9 days and regularly aggregates up to 74mm (2.9") of precipitation.

How much does it snow in Bern in December?

In Bern, during December, snow falls for 3.1 days and regularly aggregates up to 133mm (5.2") of snow.

When does it snow the most in Bern?

The month with the most snowfall is December when snow falls for 3.1 days and typically aggregates up to 133mm (5.2") of snow.

What is the month with the shortest days in Bern?

With an average of 8.6h of daylight, December has the shortest days of the year in Bern.

How many hours of daylight does Bern have in December?

In Bern, Switzerland, the average length of the day in December is 8.6h.

What is the month with the least sunshine in Bern?

With an average of 1.6h of sunshine, December has the least sunshine of the year in Bern, Switzerland.

How many hours of sunshine does Bern have in December?

The average sunshine in December in Bern is 1.6h.

When is the lowest UV index in Bern?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Bern, Switzerland.

How high is the UV index in December in Bern?

In December, the average daily maximum UV index in Bern is 1. A UV Index value of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Bern, Switzerland
  • Average high temperature in December: 3.5°C

The warmest month (with the highest average high temperature) is July (24.3°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in December: -2.3°C

The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).

Average humidity in December - Bern, Switzerland
  • Average humidity in December: 85%

Months with the highest relative humidity are November and December (85%).
Months with the lowest relative humidity are April, June and July (71%).

Average rainfall in December - Bern, Switzerland
  • Average rainfall in December: 74mm

The wettest month (with the highest rainfall) is May (119mm).
The driest month (with the lowest rainfall) is February (55mm).

Average rainfall days in December - Bern, Switzerland
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is May (12.6 days).
The month with the lowest number of rainy days is September (8.9 days).

Average snowfall in December - Bern, Switzerland
  • Average snowfall in December: 133mm

The month with the highest snowfall is December (133mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in December - Bern, Switzerland
  • Average snowfall days in December: 3.1 days

The month with the highest number of snowfall days is January (4.1 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Bern, Switzerland
  • Average daylight in December: 8.6h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in December: 1.6h

The month with most sunshine is July (Average sunshine: 7.6h).
The month with least sunshine is December (Average sunshine: 1.6h).

Average UV index in December - Bern, Switzerland
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).